DE2340419A1 - SAFETY SKI BINDING - Google Patents

Description

DIPL.-.NG. GRAMKOW DR. MÜLLER-BORE DIPL.-PHYS. DR. MANITZ DIPL.-CHEM. Ie. DEUFEl DIPL-ING. DARK FOREST

Munich, August 9, 1973 M / Sv - G 2335 (G929)

United building hardware factories

Gretsch & Co. GmbH. 725 Leonberg, P.O. Box

Safety ski bindings

The invention relates to a safety ski binding with a Shoe holder which can be pivoted away from the shoe after overcoming a locking force about a transverse and / or vertical axis and this releases it, with at least one locking surface being provided on the shoe holder, which is resiliently connected to the Housing supported locking member cooperates and the distance of the locking surface to the transverse axis in the area between the The closing and release position of the binding decreases towards the bottom.

A problem with such safety ski bindings, which are used both for heel and toe support is that the trip characteristics in the horizontal and vertical directions are frequent cannot be set independently to the extent desired unless with a substantial one Expenditure.

The aim of the invention is to create a safety ski binding of the type mentioned at the beginning, which

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is designed to provide a wide variety of desired vertical and horizontal trip characteristics in practice can be determined independently of each other and with simple means.

To achieve this object, the invention provides that the locking member has a locking nose facing the locking surface, which is in the horizontal central position Shoe holder in each vertical pivot position of the area between the closed and released position on two adjacent ones Supports points of the locking surface, the entirety of which two on the locking surface running from top to bottom Defined contact paths. By suitably designing the locking surface, the horizontal release characteristic can be achieved in this way assigned to the vertical release characteristics of the binding, so that in every vertical position of the shoe holder a certain horizontal release characteristic can be selected by constructive measures.

Preferably, the training is such that the distance between the two interacting with the locking edge contact lines The locking surface is reduced downwards. The distance between the lines of contact is expediently reduced in the downward direction such that the release force remains at least constant in the horizontal direction with increasing lifting of the shoe holder and preferably decreases. Such a trigger characteristic is useful because the skier's leg The higher the shoe holder, the more stressed it is e.g. in the event of a head-on fall and thus also an increase in the counteracting the twisting release Frictional forces occurs. Due to the inventive training is in this case (combined load) only a smaller torsional component is required to complete the side release.

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It is also useful if the vertical axis of the shoe holder lies between the transverse axis and the locking surface. In this case, the locking surface preferably extends down to the vicinity of the vertical axis. Due to this design is shortened in the vertical of the shoe holder open continuously the distance from the vertical axis to the locking surface, so that the sides ₌ tripping also facilitated by this effect. The invention thus creates a further parameter for influencing the side release characteristic. As soon as the locking member comes close to the transverse axis when the binding is fully opened in the vertical direction, the force required for the side release is negligibly small, which is advantageous, for example, for re-engaging the binding after a fall.

Another possibility for influencing the page number six characteristic is that the horizontal tangents to the locking lug or the locking surface in the area of the contact lines have a decreasing slope relative to the transverse axis downwards. Whether the tangent of the locking lug or the locking surface is decisive, depends on which of these two parts is the measure of the return movement of the locking member when triggered certainly.

The locking lug is preferably in the same sense as, however more curved than the radial sections of the locking surface. When the locking lug and locking surface lie on top of one another, this is the result two points of contact. The curvatures are preferably circular.

The Curvature of the radial sections of the locking surface preferably from top to bottom.

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In a further embodiment, the latching surface is divided into two essentially mirror images of the plane of symmetry Surfaces,

The side release characteristic can be further influenced thereby be that the width of the locking surfaces decreases towards the bottom. In this way, the locking lug is always supported towards the center on the locking surface, so that the side release force also increases with the opening of the binding is decreased.

The locking surface is expediently in the vertical direction profiled in such a way that with each lateral deflection of the shoe holder the same vertical release characteristic is essentially is obtained.

In one embodiment that is particularly suitable for a heel safety binding suitable, projections are provided on the shoe holder, which when the binding is closed with on the housing or locking member located stops cooperate in such a way that within a predetermined upward pivoting range the side release is blocked on the shoe holder. In this embodiment, however, the Toe binding have a side release option. In the event of a head-on fall, however, the pressure on the The ball of the foot is so large that it is no longer possible to reliably trigger the automatic toe function. In this case however, the heel shoe holder is raised so far that projections and stops come out of engagement and now the side release can take place at the heel binding.

The vertical release curves preferably have a first region, along which a substantially constant one Hold-down force is exerted on the shoe holder, wherein

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this area is followed by an area of increasing hold-down force, which in turn is followed by a knoll, on which the hold-down force disappears. This embodiment makes it possible without a special adjustment device, that different sole heights are used because there is a certain pivoting range of the shoe holder, in which it exerts constant forces on an introduced paragraph.

After the crest, the curve preferably drops, whereupon a Force is created in the opening direction on the shoe holder. In this case, the shoe holder exceeds when opening a dead center.

If the safety ski binding according to the invention for a Shoe heel is determined, a tread spur is preferably articulated at the lower end of the shoe holder, the pivoting range of which is limited downwards by the largest heel height still to be recorded. The swiveling step spur thus makes a special height adjustment device for the binding is unnecessary. The step spur is to be trained so that when entering the binding, the dead center of the vertical release curve is exceeded before the tread spur the Touches the base plate.

The shoe holder expediently has the shape of a housing that is open towards the latching member. Here are expedient two lateral receiving spaces are provided in the interior of the shoe holder which receive the latching member when it is pivoted out. In this way, the latching member is shielded from external influences and, at the same time, there is the required pivoting range of the shoe holder in the lateral direction.

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The shoe holder preferably has a vertical rocker on, which is pivotably mounted on the housing about the transverse axis and the front part of the shoe holder about the vertical axis pivotally carries.

According to a further embodiment, the locking member is removed from the locking surface by a hand lever against the force of the spring web movable, with a leg spring tensioned in the opening direction effective between the housing and the shoe holder is.

According to a first expedient embodiment, the locking member can be designed as a longitudinal slide. Here is that Latching member is preferably roof-shaped at the top and there rests against the housing that is designed to match. Through this self-centering of the locking member is guaranteed when the binding is opened in the vertical direction in the event of a fall. This is important because, at the same time as the vertical release, there are also lateral forces on the binding can work.

Another embodiment provides that the latching member at the top and preferably also at the bottom by means of rollers in the housing is led. As a result, the displacement forces for the locking member are further reduced because of the reduced friction.

The latching member can advantageously also be designed as a rocker or crank that is hinged to the bottom of the housing.

The transverse axis of the shoe holder is preferably located at the top of the housing.

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Another advantageous embodiment is characterized in that the locking lug through the generatrix of a a transverse axis is formed rotatably mounted on the locking member roller. This has the advantage that the frictional force is reduced in the vertical release and that constantly new surfaces of the roller in contact with the Locking surface come, so that the wear of the locking lug is significantly reduced.

The housing is expediently longitudinally displaceable on a base plate arranged and biased towards the shoe by a further spring.

The latching member can also be formed by a slide guided in lateral elongated holes, the slide expediently is supported by laterally attached rollers on the housing.

The invention is described below, for example Drawing described; in this shows:

1 shows a vertical longitudinal section of a safety ski binding according to the invention for a shoe heel in the closed state,

Fig. 2 is a horizontal section of the binding shown in Figure 1,

3 shows a section analogous to FIG. 1 of the same binding in the open state in the vertical direction,

4 shows a horizontal section analogous to FIG. 2 of the binding in the laterally released state, the

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Fig. 5s. to 5e radial sections along lines O-A to O-E in figure 1,

6 shows a vertical cross section of a first embodiment of the housing and latching member,

7 shows a vertical cross section of a second particularly preferred embodiment of the housing and latching member,

8 shows a vertical longitudinal section of a further embodiment the safety ski binding according to the invention,

9 is a vertical longitudinal section of still another embodiment the ski safety binding according to the invention,

10 shows a further embodiment of the invention Safety ski binding in a vertical longitudinal section,

FIG. 11 is a horizontal section of that illustrated in FIG Embodiment,

FIG. 12 is a partial plan view of a further preferred embodiment, and

13 and 14 · Horizontal sections of a further embodiment.

According to FIGS. 1 to 4 and 6, 7 is on a ski fixed Base plate 28, a housing 12 mounted displaceably in the longitudinal direction. The housing 12 is by one or more side by side arranged coil springs 29 to issue a preload on the shoe. The caused by the spring 29 Displacement of the housing 12 is limited by a stop 4-0.

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According to FIGS. 1 to 4, a vertical rocker 11a of the ski boot from behind is attached to the housing 12 in the upper area, articulated above and laterally holding shoe holder 11. Between the part of the shoe holder facing the shoe and the vertical rocker 11a is an articulated connection with a vertical or vertical axis 17. As shown in FIG FIGS. 1 and 3 can be seen that the joints defining the vertical axis 17 are provided at the top and bottom.

The part of the shoe holder 11 facing the shoe is designed and hollow in the manner shown in the drawing has a locking surface 13 on the inside, which is connected to a locking member 14 cooperates, which by means of a helical spring 26 supported on the housing 12 in the direction of the locking surface 13 is biased. An adjusting screw 30 enables the spring preload and thus the release forces to be set.

As can be seen particularly clearly from FIGS. 2, 4 and 5, the radial sections according to O-A to 0-E are the locking surface 13 sections of a circle with centers towards the shoe. The front edge of the locking lug 16 also represents one Circle section, which, however, has a smaller radius of curvature than the radial sections of the locking surface 13. In this way, when the shoe holder 11 according to FIGS. 2 and 5 is not deflected laterally, two contact paths are created 15 between locking member 14 and locking surface 13.

In the top view of Figure 2, the locking member 14 has two lateral projections 14a, 14b, which are created by that outside the contact tracks 15, the contour of the locking member 14 is bent backwards.

In FIGS. 1 and 3, stops 20 and 20 ′ fixed to the shoe holder are shown, which are provided with projections 19 on the housing 12

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or the locking member 14 itself cooperate in such a way that that in the closed position shown in Figure 1, a side release of the binding is impossible. Only after one The stop 20 with the projection 19 or the stop 20 'with the latching member 14 does not come out of the predetermined vertical stroke Intervention so that the release can take place.

According to FIGS. 1 and 3, the vertical release tracks have a dome 21 in the lower region, which is at a dead point corresponds to when the shoe holder 11 is moved upward.

In the lower area of the shoe holder 11, which in this case is designed as a heel binding, a step spur is provided, which is articulated so that it can rotate about a transverse axis 33. According to Figure 3, the downward movement of the tread spur 22 is limited so that that the spur of the falling shoe heel is still gripped can be used to trigger the closing movement of the binding.

According to Figures 2 and 4, laterally receiving spaces 23 are provided in the interior of the shoe holder 11, into which the locking member 14 can occur when the shoe holder 11 is triggered laterally according to FIG.

According to Figures 1 and 2 is between the housing 12 and the vertical rocker 11a a leg or spiral spring 24 is effective, which in the event of the locking member 14 causes the opening of the shoe holder 11 by means of a hand lever 25.

The mode of action of the safety ski binding according to the invention can be seen particularly clearly from FIGS. 5a to 5e.

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It can be seen that the contact tracks 15 run steadily downwards together, so that the base of the contact points of the locking member 14 on the locking surface 13 from A via B, C, D to E is constantly narrowing. This results in a steady reduction in the lateral release force by changing the lever arm the locking force brought about, as is desirable in many cases.

While in Figure 6 a cuboid design of the housing 12 and locking member 14 is shown, the friction between locking member 14 and housing 12 through above and below attached transverse rollers 27 is reduced, locking member and housing 12 are in the embodiment according to Figure 7 above Roof-shaped, so that when the locking member 14 is pushed upward, it is self-centering.

The embodiments according to Figures 8, 9 and 10 are largely similar to the embodiment described above. However, the slide 14 which forms the latching member in the previous embodiments is in the embodiment according to FIG ^. replaced. In the embodiment according to FIG. 9, instead of the slide 14, a slider crank 14 ″ is provided, which is guided by means of hinge plates 35 and elongated holes 36.

In the embodiment according to FIGS. 10 and 11 a longitudinally movable slide 14 " ^! Is again provided, which in this case, however, is guided by means of pins 37 movable in elongated holes 31, the friction being also caused by rollers 32 fastened laterally in slide 14"' vertical axes that roll on the inner walls of the housing 12 is reduced.

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In the embodiment according to FIG. 12, the latching surface 13 is in two partial surfaces which are mirror images of the plane of symmetry 41 divided, between which there is a clear depression 42. This ensures perfect functioning also guaranteed in the event of the ingress of dirt.

The mode of operation of the safety ski binding according to the invention is explained below with reference to FIGS. 1 to 5:

Is e.g. due to a frontal fall on the shoe holder 11 exerted a force of a predetermined magnitude upwards according to FIG. 1, the shoe holder 11 moves upwards and the contact points or areas of the latching member 14 on the latching surface 13 slide along the contact tracks 15 on the locking surface 13 downwards. This process is shown in different phases in FIGS. 5a to 5e. The steady convergence of the contact tracks 15 downwards due to a steady narrowing of the radial sections from top to bottom is shown not only in FIGS. 5a to 5e, but also with the aid of the dashed lines 15 in FIG Recognize vertical longitudinal sections. The vertical longitudinal sections according to Figures 1, 3, 8, 9 and 10 are along the middle taken from the binding, so that the contact tracks 15 would normally not be recognizable and therefore dashed are shown.

The stops 20 or 20 remain until the position after the cut 0-B is reached ^! and the projections 19 and the locking member 14 in engagement, so that a side release can not take place. When the shoe holder 11 is raised further, however, the projections 19 or the latching member 14 are released from the stops 20 and 20 ', and a certain magnitude can now occur when a lateral force occurs

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the front part of the shoe holder 11 relative to the vertical rocker 11a move laterally, the locking member 14 being pushed back further against the force of the spring 26. at this lateral movement remains only that of the two projections 14a, 14b in contact with the locking surface 13, the is arranged on the side towards which the pivoting takes place. With the pivoting out shown in FIG to the left therefore only the projection 14a remains with the locking surface 13 engaged, while the projection 14b of the Latching surface 13 is lifted off.

So while in the horizontal central position of the shoe holder 11 there are always two contact paths between the locking member 14 and Latching surface 13 are present, there is only one contact point when the shoe holder 11 is deflected to the side. Due to the design of the locking area 13 according to the invention However, this does not change the vertical release characteristics of the binding.

Due to the fact that when the shoe holder 11 is open according to FIG. 3, the foremost point of the locking member 14 is close the vertical axis 17 is located, is the turning back of the shoe holder 11 from the lateral deflection position shown in FIG in the horizontal middle position possible with little effort.

The binding is closed simply in that the skier presses his heel on the spur 22, whereupon the locking member 14 exceeds the dome 21 on the locking surface 13 and thus causes the binding to snap shut will. The articulated arrangement of the tread spur 22 by means of the axis 33 enables the shoe holder 11 moves down until he touches the heel or

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has grasped the sole in the toe area and presses down against the ski or the base plate.

The opening by hand takes place in such a way that the hand lever 25 is pulled upwards according to Figure 1, whereupon e.g. by means of a pin 38 which works in a recess 39, the locking member 14 against the force of the spring 26 to the rear is moved. Due to the effect of the leg spring 24, the shoe holder 11 is now pivoted upwards. As soon the locking member 14 has exceeded the dome 21, remains the shoe holder 11 in the uppermost position shown in FIG. 3, even when the hand lever 25 is released again will.

It should also be noted that in addition to a vertical and a side release, there is also a release in any Can take place diagonally, with the two basic release characteristics described above component-wise cooperate.

In the practical design of a binding according to the invention, it should be noted that the side release characteristic is determined by the following freely selectable parameters within the scope of the invention:

a) Location of the vertical axis 17 between the transverse axis 18 and the Locking surface 13;

b) distance between the contact tracks 15 on the locking surface 13;

c) Horizontal tangent of the locking surface 13 or the locking lug 16 in the area of the contact points between latching member 14 and latching surface 13.

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The Pig. 13 and 14 show an embodiment in which a shoe holder 11 divided in the longitudinal direction of the ski along the middle of the binding and a correspondingly divided latching surface 13 are provided. With a horizontal release according to S ¹ Ig. 14 no longer pivots the entire shoe holder 11, but only one half each either to the left (FIG. 14) or to the right. The ski boot is thus released even better. In this case, the tread spur 22 is connected to the vertical rocker 11a so that it does not swivel out with it. Each half can advantageously be pivoted about its own vertical axis.

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Claims (32)

Claims c h e [1.) Safety ski binding with a shoe holder which, after overcoming a detent force around a transverse and / or vertical axis can be pivoted away from the shoe and thereby releases it, with at least one locking surface on the shoe holder is provided, which cooperates with a resiliently supported latching member on the housing, and the distance of the The locking surface decreases towards the transverse axis in the area between the closing and release positions of the binding towards the bottom, characterized in that the latching member (14) has a latching lug facing the latching surface (13) (16), which when the shoe holder (11) is in the horizontal central position in each vertical Pivot position of the area between the closed and release position on two adjacent points the latching surface (15) is supported, the entirety of which two contact tracks running from top to bottom on the latching surface (13) (15) defined. 2. Safety ski binding according to claim 1, characterized in that the distance between the locking surface (13) to the transverse axis (18) increases again after reaching the release position (21). 3. Safety ski binding according to claim 1 or 2, characterized in that the distance between the two with the locking lug (16) interacting contact tracks (15) of the locking surface is reduced downwards. 4. Safety ski binding according to claim 3 »characterized in that the distance between the contact tracks (15) reduced downward so that the release force in the horizontal direction with increasing -17- 509808/0604 Raising the shoe holder (11) remains at least constant and preferably decreases. 5. Safety ski binding according to one of the preceding claims, characterized in that the vertical axis (17) of the shoe holder (11) lies between the transverse axis (18) and the locking surface (13). 6. Safety ski binding according to claim 1 and 5, characterized in that the locking surface (13) extends down to the vicinity of the vertical axis (17). 7. Safety ski binding according to one of the preceding claims, characterized in that the horizontal tangents to the locking lug (16) or the locking surface (13) in the area of the contact tracks (15) below have a decreasing inclination relative to the transverse axis (18). 8. Safety ski binding according to one of the preceding claims, characterized in that the locking edge on the locking lug (16) in the same sense as however, it is more curved than the radial sections of the locking surface (13). 9. Safety ski binding according to claim 8, characterized in that the curvatures are circular are. 10. Safety ski binding according to claim 8 or 9, characterized characterized in that the latching surface (13) in two to the plane of symmetry (41) are essentially mirror images Surfaces are falling apart. -18- 509808/0604 11. Safety ski binding according to one of claims 8 to 10, characterized in that the curvature the radial section of the locking surface (13) increases from top to bottom. 12. Safety ski binding according to one of the preceding claims, characterized in that the width of the locking surface (13) decreases towards the bottom. 13. Safety ski binding according to one of the preceding claims, characterized in that the latching surface (13) is profiled in this way in the vertical direction is that with each lateral deflection of the shoe holder (11) essentially the same vertical release mechanism , characteristic is obtained. 14. Safety ski binding according to one of the preceding claims, characterized in that projections (19) are provided on the housing (12) which at closed binding with stops (20) located on the shoe holder (11) cooperate in such a way that the side release is blocked within a predetermined upward pivoting range of the shoe holder (11). 15. Safety ski binding according to one of claims 1 to 13, characterized in that stops (20 ^! ) In the shoe holder (11) when the binding is closed with the locking member (14) cooperate in such a way that within a predetermined upward pivoting range of the shoe holder (11) Page trigger is locked. 16. Safety ski binding according to one of the preceding claims, characterized in that -19- 509808/0604 the vertical release cams have a first region along which a substantially constant hold-down force is exerted on the shoe holder (11), and that an area of increasing hold-down force is applied to this area adjoins, which in turn is followed by a dome (21) on which the hold-down force disappears. 17. Safety ski binding according to claim 16, characterized in that after the dome (21) the Curve drops, whereupon a force arises in the opening direction on the shoe holder (11). 18. Safety ski binding according to one of claims 16 or 17, for a shoe heel, characterized in that that at the lower end of the shoe holder (11) a tread spur (22) is articulated, the pivoting range of which according to below is limited by the largest paragraph size still to be recorded. 19. Safety ski binding according to one of the preceding claims, characterized in that the shoe holder (11) has the shape of a locking member (14) has an open housing. 20. Safety ski binding according to claim 19 *, characterized in that two the locking member (14) lateral receiving spaces (23) are provided in the interior of the shoe holder (11) when pivoting out. 21. Safety ski binding according to one of the preceding claims , characterized in that the shoe holder (11) has a vertical rocker (11a) -20-509808 / 0 6 * 0 4 comprises, which is mounted pivotably about the transverse axis (18) on the housing (12) and the front part of the shoe holder (11) carries pivotable about the vertical axis (17). 22. Safety ski binding according to one of the preceding claims, characterized in that the locking member (14) by a hand lever (25) against the The force of the spring (26) can be moved away from the locking surface (13) and between the housing (12) and the shoe holder (11) a spring (24-) which is tensioned in the opening direction acts. is sam. 23. Safety ski binding according to one of the preceding claims, characterized in that the locking member (14) is designed as a longitudinal slide. 24. Safety ski binding according to claim 23, characterized in that the latching member (14) at the top Is roof-shaped and there rests against the housing (12) designed to match. 25. Safety ski binding according to claim 23 or 24, characterized in that the locking member (14) is guided above and preferably also below by means of rollers (27) in the housing (12). 26. Safety ski binding according to one of claims 1 to 22, characterized in that the locking member as a swing arm articulated at the bottom of the housing (14 ^! )
or slider crank (14 ") is formed. 27. Safety ski binding according to one of the preceding claims, characterized in that -21- 509808/0604 the transverse axis (18) of the shoe holder (11) is located on top of the housing (12). 28. Safety ski binding according to one of the preceding claims, characterized in that the latching lug (16) in the engagement area is a section of a body of revolution with a horizontal axis. 29. Safety ski binding according to claim 28, characterized in that the locking lug (16) through the generating line is formed by a roller rotatably mounted on the latching member (14) about a transverse axis. 30. Safety ski binding according to one of the preceding claims, characterized in that the housing (12) arranged on a base plate (28) so as to be longitudinally displaceable and by a further spring (29) for Shoe is pretensioned. 31. Safety ski binding according to one of claims 1 to 22 and 27 to 30, characterized in that the locking member is formed by a slide (14 ^IM ) guided in lateral elongated holes (31). 32. Safety ski binding according to claim 31, characterized in that the slide (14 "*) through laterally attached rollers (32) is supported on the housing. 33 · Safety ski binding according to one of the preceding claims, characterized in that the front part of the shoe holder (11) is divided in the middle of the binding or at a distance from the middle of the binding in the ski direction and only the right part to the right and the left part to the left swings out.